build-apps.yml

name: Example apps build check
on:
  push:
    branches:
      - main
  pull_request:
    types: [opened, synchronize, reopened, ready_for_review]
  workflow_dispatch:

jobs:
  detect-changes:
    if: github.repository == 'software-mansion/react-native-executorch' && github.event.pull_request.draft != true
    runs-on: ubuntu-latest
    outputs:
      android_apps: ${{ steps.matrix.outputs.android_apps }}
      ios_apps: ${{ steps.matrix.outputs.ios_apps }}
      bundle_apps: ${{ steps.matrix.outputs.bundle_apps }}
    steps:
      - name: Checkout
        uses: actions/checkout@v6

      - name: Detect changed apps
        id: filter
        if: github.event_name != 'workflow_dispatch'
        uses: dorny/paths-filter@v3
        with:
          filters: |
            # Cross-platform shared infrastructure
            core-shared: &core-shared
              - .github/workflows/build-apps.yml
              - packages/react-native-executorch/{scripts,third-party}/**
              - packages/react-native-executorch/{package.json,tsconfig.json}
              - packages/react-native-executorch/common/{ada,runner}/**
              - packages/react-native-executorch/common/rnexecutorch/{Error,ErrorCodes,Log}.h
              - packages/react-native-executorch/common/rnexecutorch/RnExecutorchInstaller.{cpp,h}
              - packages/react-native-executorch/common/rnexecutorch/{data_processing,host_objects,jsi,metaprogramming,tests,threads,utils}/**
              - packages/react-native-executorch/common/rnexecutorch/models/BaseModel.{cpp,h}
              - packages/react-native-executorch/src/{common,constants,errors,native,types,utils}/**
              - packages/react-native-executorch/src/index.ts
              - packages/react-native-executorch/src/modules/{BaseModule.ts,general/**}
              - packages/react-native-executorch/src/hooks/{general/**,useModule.ts,useModuleFactory.ts}
              - "{package.json,yarn.lock}"
            # Platform-specific shared
            android-shared: &android-shared
              - .github/actions/build-android-app/**
              - packages/react-native-executorch/android/**
            ios-shared: &ios-shared
              - .github/actions/build-ios-app/**
              - packages/react-native-executorch/ios/**
              - packages/react-native-executorch/react-native-executorch.podspec
            # Resource fetchers
            expo-fetcher: &expo-fetcher
              - packages/expo-resource-fetcher/**
            bare-fetcher: &bare-fetcher
              - packages/bare-resource-fetcher/**
            # Per-app package paths (TS modules + C++ models for the app's domain)
            llm-pkg: &llm-pkg
              - packages/react-native-executorch/common/rnexecutorch/TokenizerModule.{cpp,h}
              - packages/react-native-executorch/common/rnexecutorch/models/llm/**
              - packages/react-native-executorch/src/modules/natural_language_processing/{LLMModule,TokenizerModule}.ts
              - packages/react-native-executorch/src/hooks/natural_language_processing/{useLLM,useTokenizer}.ts
              - packages/react-native-executorch/src/controllers/LLMController.ts
            cv-pkg: &cv-pkg
              - packages/react-native-executorch/common/rnexecutorch/models/VisionModel.{cpp,h}
              - packages/react-native-executorch/common/rnexecutorch/models/{classification,instance_segmentation,object_detection,ocr,semantic_segmentation,style_transfer,text_to_image,vertical_ocr}/**
              - packages/react-native-executorch/src/{modules,hooks}/computer_vision/**
              - packages/react-native-executorch/src/controllers/{BaseOCRController,OCRController,VerticalOCRController}.ts
            speech-pkg: &speech-pkg
              - packages/react-native-executorch/common/pfft/**
              - packages/react-native-executorch/common/rnexecutorch/TokenizerModule.{cpp,h}
              - packages/react-native-executorch/common/rnexecutorch/models/{speech_to_text,text_to_speech,voice_activity_detection}/**
              - packages/react-native-executorch/src/modules/natural_language_processing/{SpeechToTextModule,TextToSpeechModule,VADModule,TokenizerModule}.ts
              - packages/react-native-executorch/src/hooks/natural_language_processing/{useSpeechToText,useTextToSpeech,useVAD,useTokenizer}.ts
            text-embeddings-pkg: &text-embeddings-pkg
              - packages/react-native-executorch/common/rnexecutorch/TokenizerModule.{cpp,h}
              - packages/react-native-executorch/common/rnexecutorch/models/embeddings/**
              - packages/react-native-executorch/src/modules/natural_language_processing/{TextEmbeddingsModule,TokenizerModule}.ts
              - packages/react-native-executorch/src/modules/computer_vision/ImageEmbeddingsModule.ts
              - packages/react-native-executorch/src/hooks/natural_language_processing/{useTextEmbeddings,useTokenizer}.ts
              - packages/react-native-executorch/src/hooks/computer_vision/useImageEmbeddings.ts
            # Per-app bundle: core + fetcher + pkg + app dir
            llm-app: &llm-app
              - *core-shared
              - *expo-fetcher
              - *llm-pkg
              - apps/llm/**
            computer-vision-app: &computer-vision-app
              - *core-shared
              - *expo-fetcher
              - *cv-pkg
              - apps/computer-vision/**
            speech-app: &speech-app
              - *core-shared
              - *expo-fetcher
              - *speech-pkg
              - apps/speech/**
            text-embeddings-app: &text-embeddings-app
              - *core-shared
              - *expo-fetcher
              - *text-embeddings-pkg
              - apps/text-embeddings/**
            bare-rn-app: &bare-rn-app
              - *core-shared
              - *bare-fetcher
              - *llm-pkg
              - apps/bare-rn/**
            # Final per-platform per-app filters (the only ones the matrix consumes)
            llm-android: [*llm-app, *android-shared]
            llm-ios: [*llm-app, *ios-shared]
            computer-vision-android: [*computer-vision-app, *android-shared]
            computer-vision-ios: [*computer-vision-app, *ios-shared]
            speech-android: [*speech-app, *android-shared]
            speech-ios: [*speech-app, *ios-shared]
            text-embeddings-android: [*text-embeddings-app, *android-shared]
            text-embeddings-ios: [*text-embeddings-app, *ios-shared]
            bare-rn-android: [*bare-rn-app, *android-shared]
            bare-rn-ios: [*bare-rn-app, *ios-shared]

      - name: Compute matrices
        id: matrix
        run: |
          all='["llm","computer-vision","speech","text-embeddings","bare-rn"]'
          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
            echo "android_apps=$all" >> "$GITHUB_OUTPUT"
            echo "ios_apps=$all" >> "$GITHUB_OUTPUT"
            echo "bundle_apps=$all" >> "$GITHUB_OUTPUT"
          else
            changes='${{ steps.filter.outputs.changes }}'
            android_apps=$(echo "$changes" | jq -c '[.[] | select(endswith("-android")) | sub("-android$"; "")]')
            ios_apps=$(echo "$changes" | jq -c '[.[] | select(endswith("-ios")) | sub("-ios$"; "")]')
            bundle_apps=$(echo "$changes" | jq -c '[.[] | select(endswith("-app")) | sub("-app$"; "")]')
            echo "android_apps=$android_apps" >> "$GITHUB_OUTPUT"
            echo "ios_apps=$ios_apps" >> "$GITHUB_OUTPUT"
            echo "bundle_apps=$bundle_apps" >> "$GITHUB_OUTPUT"
          fi

  bundle:
    needs: detect-changes
    if: needs.detect-changes.outputs.bundle_apps != '[]' && needs.detect-changes.outputs.bundle_apps != ''
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        app: ${{ fromJSON(needs.detect-changes.outputs.bundle_apps) }}
        platform: [android, ios]
    concurrency:
      group: bundle-${{ matrix.platform }}-${{ matrix.app }}-${{ github.ref }}
      cancel-in-progress: true
    steps:
      - name: Checkout
        uses: actions/checkout@v6
      - name: Setup
        uses: ./.github/actions/setup
      - name: Bundle JS for ${{ matrix.platform }}
        working-directory: apps/${{ matrix.app }}
        run: |
          if [ "${{ matrix.app }}" = "bare-rn" ]; then
            npx react-native bundle \
              --platform ${{ matrix.platform }} \
              --entry-file index.js \
              --bundle-output /tmp/bundle.js \
              --dev false
          else
            npx expo export \
              --platform ${{ matrix.platform }} \
              --output-dir /tmp/expo-export
          fi

  build-android:
    needs: detect-changes
    if: needs.detect-changes.outputs.android_apps != '[]' && needs.detect-changes.outputs.android_apps != ''
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        app: ${{ fromJSON(needs.detect-changes.outputs.android_apps) }}
    concurrency:
      group: android-${{ matrix.app }}-${{ github.ref }}
      cancel-in-progress: true
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          submodules: recursive
      - name: Build Android app
        uses: ./.github/actions/build-android-app
        with:
          app-path: apps/${{ matrix.app }}
          expo-prebuild: ${{ matrix.app == 'bare-rn' && 'false' || 'true' }}

  build-ios:
    needs: detect-changes
    if: needs.detect-changes.outputs.ios_apps != '[]' && needs.detect-changes.outputs.ios_apps != ''
    runs-on: macos-latest
    strategy:
      fail-fast: false
      matrix:
        app: ${{ fromJSON(needs.detect-changes.outputs.ios_apps) }}
    concurrency:
      group: ios-${{ matrix.app }}-${{ github.ref }}
      cancel-in-progress: true
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          submodules: recursive
      - name: Build iOS app
        uses: ./.github/actions/build-ios-app
        with:
          app-path: apps/${{ matrix.app }}
          expo-prebuild: ${{ matrix.app == 'bare-rn' && 'false' || 'true' }}